<?php
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Easy set variables
 */

/* Array of database columns which should be read and sent back to DataTables. Use a space where
 * you want to insert a non-database field (for example a counter or static image)
 */
$aColumns = array( 'id', 'hp', 'agenid', 'lastupdate', 'ymCenter' );

/* Indexed column (used for fast and accurate table cardinality) */
$sIndexColumn = "id";

/* DB table to use */
$sTable = "hpagen";

/* Database connection information */
$gaSql['user']       = "root";
$gaSql['password']   = "debi";
$gaSql['db']         = "miniengine";
$gaSql['server']     = "localhost";

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * If you just want to use the basic configuration for DataTables with PHP server-side, there is
 * no need to edit below this line
 */

/*
 * MySQL connection
 */
$gaSql['link'] =  mysql_pconnect( $gaSql['server'], $gaSql['user'], $gaSql['password']  ) or
die( 'Could not open connection to server' );

mysql_select_db( $gaSql['db'], $gaSql['link'] ) or
die( 'Could not select database '. $gaSql['db'] );


/*
 * Paging
 */
$sLimit = "";
if ( isset( $_GET['iDisplayStart'] ) && $_GET['iDisplayLength'] != '-1' )
{
	$sLimit = "LIMIT ".mysql_real_escape_string( $_GET['iDisplayStart'] ).", ".
	mysql_real_escape_string( $_GET['iDisplayLength'] );
}


/*
 * Ordering
 */
$sOrder = "";
if ( isset( $_GET['iSortCol_0'] ) )
{
	$sOrder = "ORDER BY  ";
	for ( $i=0 ; $i<intval( $_GET['iSortingCols'] ) ; $i++ )
	{
		if ( $_GET[ 'bSortable_'.intval($_GET['iSortCol_'.$i]) ] == "true" )
		{
			$sOrder .= "`".$aColumns[ intval( $_GET['iSortCol_'.$i] ) ]."` ".
			mysql_real_escape_string( $_GET['sSortDir_'.$i] ) .", ";
		}
	}

	$sOrder = substr_replace( $sOrder, "", -2 );
	if ( $sOrder == "ORDER BY" )
	{
		$sOrder = "";
	}
}


/*
 * Filtering
 * NOTE this does not match the built-in DataTables filtering which does it
 * word by word on any field. It's possible to do here, but concerned about efficiency
 * on very large tables, and MySQL's regex functionality is very limited
 */
$sWhere = "";
if ( isset($_GET['sSearch']) && $_GET['sSearch'] != "" )
{
	$sWhere = "WHERE (";
	for ( $i=0 ; $i<count($aColumns) ; $i++ )
	{
		$sWhere .= "`".$aColumns[$i]."` LIKE '%".mysql_real_escape_string( $_GET['sSearch'] )."%' OR ";
	}
	$sWhere = substr_replace( $sWhere, "", -3 );
	$sWhere .= ')';
}

/* Individual column filtering */
for ( $i=0 ; $i<count($aColumns) ; $i++ )
{
	if ( isset($_GET['bSearchable_'.$i]) && $_GET['bSearchable_'.$i] == "true" && $_GET['sSearch_'.$i] != '' )
	{
		if ( $sWhere == "" )
		{
			$sWhere = "WHERE ";
		}
		else
		{
			$sWhere .= " AND ";
		}
		$sWhere .= "`".$aColumns[$i]."` LIKE '%".mysql_real_escape_string($_GET['sSearch_'.$i])."%' ";
	}
}


/*
 * SQL queries
 * Get data to display
 */
$sQuery = "SELECT SQL_CALC_FOUND_ROWS `".str_replace(" , ", " ", implode("`, `", $aColumns))."`
		FROM   $sTable
		$sWhere
		$sOrder
		$sLimit";
		$rResult = mysql_query( $sQuery, $gaSql['link'] ) or die(mysql_error());

		/* Data set length after filtering */
		$sQuery = "SELECT FOUND_ROWS()";
		$rResultFilterTotal = mysql_query( $sQuery, $gaSql['link'] ) or die(mysql_error());
		$aResultFilterTotal = mysql_fetch_array($rResultFilterTotal);
		$iFilteredTotal = $aResultFilterTotal[0];

		/* Total data set length */
		$sQuery = "
		SELECT COUNT(`".$sIndexColumn."`)
		FROM   $sTable
	";
		$rResultTotal = mysql_query( $sQuery, $gaSql['link'] ) or die(mysql_error());
		$aResultTotal = mysql_fetch_array($rResultTotal);
		$iTotal = $aResultTotal[0];


		/*
		 * Output
		 */
		$output = array(
		"sEcho" => intval($_GET['sEcho']),
		"iTotalRecords" => $iTotal,
		"iTotalDisplayRecords" => $iFilteredTotal,
		"aaData" => array()
		);

		while ( $aRow = mysql_fetch_array( $rResult ) )
		{
			$row = array();
			for ( $i=0 ; $i<count($aColumns) ; $i++ )
			{
				if ( $aColumns[$i] == "version" )
				{
					/* Special output formatting for 'version' column */
					$row[] = ($aRow[ $aColumns[$i] ]=="0") ? '-' : $aRow[ $aColumns[$i] ];
				}
				else if ( $aColumns[$i] != ' ' )
				{
					/* General output */
					$row[] = $aRow[ $aColumns[$i] ];
				}
			}
			$output['aaData'][] = $row;
		}

		echo json_encode( $output );
		?>